Perfume flask



FIG. 1 is a perspective view of a perfume flask showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof, the opposite side being a mirror image; and,

FIG. 5 is a rear elevation view thereof. 

The ornamental design for a perfume flask, as shown and described. 